package com.itheima.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.dto.DishDto;
import com.itheima.entity.Dish;
import com.itheima.entity.DishFlavor;
import com.itheima.mapper.DishMapper;
import com.itheima.service.DishFlavorService;
import com.itheima.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;


@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private DishMapper dishMapper;

    /**
     * 新增菜品，同时保存对应的口味数据
     *
     * @param dishDto
     */
    @Transactional   //开始事务注解，需要在启动类上面增加@EnableTransactionManagement //开启事务注解支持
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        save(dishDto);

        Long dishID = dishDto.getId();//菜品id

        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors.stream().map((item) -> {
            item.setDishId(dishID);
            return item;
        }).collect(Collectors.toList());

        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }

    /**
     * //根据ID查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish, dishDto);
        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);

        return dishDto;

    }

    /**
     * 修改菜品
     *
     * @param dishDto
     */
    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息       DishDto 继承的 Dish
        this.updateById(dishDto);

        //清理当前菜品对应的口味数据-- dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId, dishDto.getId());

        dishFlavorService.remove(queryWrapper);
        //添加当前提交过来的口味数据--dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        //菜品口味
//        flavors.stream().map((item) -> {
//            item.setDishId(dishDto.getId());
//            return item;
//        }).collect(Collectors.toList());

        for (DishFlavor flavor : flavors) {
            flavor.setDishId(dishDto.getId());
        }

        dishFlavorService.saveBatch(flavors);
    }

    /**
     * 删除菜品
     *
     * @param ids
     */
    public void delete(String ids) {
        List<String> id = Arrays.asList(ids.split(","));
        if (id.size() == 1) {
            //单个id删除
            dishMapper.deleteById(id.get(0));
        } else if (id.size() > 1) {
            //deleteBatchIds 根据list多个id删除
            dishMapper.deleteBatchIds(id);
        }
    }

    /**
     * 状态码 停售 启售
     * @param ztm
     * @param ids
     */
    public void status(int ztm, String ids) {
        List<String> id = Arrays.asList(ids.split(","));
        Dish dish = new Dish().setStatus(ztm);
        if (id.size() == 1) {
            dishMapper.update(dish, new QueryWrapper<Dish>().eq("id", id.get(0)));
        } else if (id.size() > 1) {
            for (String idd : id) {
                dishMapper.update(dish, new QueryWrapper<Dish>().eq("id", idd));
            }
        }
    }
}
